environmental
algae
aquatic
container
contaminated
contamination
cyanobacteria
danger
dangerous
data
dirty
disaster
ecological
ecologist
ecology
ecosystem
environment
flora
glove
green
green algae
infest
laboratory
natural
nature
organic
outdoors
plant
polluted
pollution
problem
protective
research
river
river bank
sample
save earth
scientist
side view
slimy
summer
take sample
testing
toxic
tube
water
woman